The device as set forth in claim 9, wherein the bushing is configured to substantially prevent rotation and drift of the shear pin interfaces.

该装置所规定的索赔9，其中套管配置为防止大量轮换和漂移的剪切针接口。

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If you want to change the specification, you just need to order drift pin of different specification.

冲杆与冲钉为组合式，更换不同规格的形腔只需另订购冲钉即可。

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